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Large-scale producing method for non-crystal carbon nano tube

A technology of nanotubes and amorphous carbon, which is applied in the field of preparation of amorphous carbon nanotubes, can solve the problems of complex post-processing, complex equipment, and low yield, and achieve simple and easy methods, low energy consumption, and high efficiency. Effect

Inactive Publication Date: 2007-11-14
NANJING UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, these preparation methods all have problems such as low yield, high energy consumption, complex equipment, the need to add catalysts, and complicated post-treatment.
So far, there is no report on the large-scale preparation of amorphous carbon nanotubes at low temperature, using simple equipment, and without the participation of catalysts.

Method used

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  • Large-scale producing method for non-crystal carbon nano tube
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. Preparation of amorphous carbon nanotubes

[0016] A method for preparing amorphous carbon nanotubes, which is to dissolve 2mmol ferrocene in 50ml carbon tetrachloride and stir evenly, move it into a stainless steel reaction kettle with a polytetrafluoroethylene substrate, and then heat up to 180°C for constant temperature reaction for 12 Hour. After the reaction, the filtered black product was washed three times with distilled water and ethanol in sequence, and finally dried in vacuum at 80° C. for 10 hours to obtain 0.8 g of amorphous carbon nanotubes. The product is measured by powder X-ray diffraction (XRD), and the result (see accompanying drawing 1) shows that there is no obvious diffraction peak, and it is a completely amorphous product. No heterogeneous peaks were found, indicating that the purity of the product is relatively high. Through SEM analysis (see Figure 2), it is observed that the amorphous carbon nanotube of the present invention has ...

Embodiment 2

[0017] Embodiment 2. Preparation of amorphous carbon nanotubes

[0018] Dissolve 2mmol of ferrocene in 50ml of carbon tetrachloride and stir evenly, move it into a polytetrafluoroethylene-lined stainless steel reaction kettle, then raise the temperature to 180°C for constant temperature reaction for 18 hours, and the other preparation conditions are the same as in Example 1. Likewise 0.8 g of a product of similar size and form was obtained.

Embodiment 3

[0019] Embodiment 3. Preparation of amorphous carbon nanotubes

[0020] Dissolve 2mmol of ferrocene in 50ml of carbon tetrachloride and stir evenly, move it into a polytetrafluoroethylene-lined stainless steel reaction kettle, then raise the temperature to 160°C and react at a constant temperature for 24 hours. The other preparation conditions are the same as in Example 1. Likewise 0.6 g of a product of similar size and form was obtained.

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Abstract

It is a kind of method used to make nanophase pipe of amorphous carbon. It dissolves 1mmol of dicyclopentadienyl iron in 20-50ml of carbon tetrachloride and mix them evenly, move the mixture into the stainless steel autoclave underlayed by polytetrafluoroethylene, then improve the temperature to 120-180deg.C and make them into isothermal reaction for 12-72 hours. After the isothermal reaction, scrub black outcome got after filtrating using distilled water and ethanol for 3 times in turn, dry it for 10 hours at 80deg.C in vacuum, then get the nanophase pipe of amorphous carbon. The producing rate of making nanophase pipe of amorphous carbon exceeds 90%, energy dissipation is low with high efficiency, it needn't append activator, the method is simple and easy to operate, the raw material is easy to get, the scale is easy to enlarge, and it is suitable for multitudinous production of serialization.

Description

technical field [0001] The invention relates to a method for preparing amorphous carbon nanotubes. Specifically, a large-scale preparation of amorphous carbon nanotubes was made using a low-temperature solvothermal method. Background technique [0002] Since S.Iijima of Japan Electronics Corporation (NEC) formally discovered carbon nanotubes in 1991 [referring to: Iijima S., Nature, 1991,354,56.], set off on a worldwide scale to be represented by carbon nanotubes. One-dimensional nanostructure research upsurge [see: (a) Rothschild A., J.Am.Chem.Soc.2000, 122, 5169. (b) Pan Z.W., Science2001, 291, 1947.]. The structure of carbon nanotubes can be regarded as a hollow carbon cage tube formed by single-layer or multi-layer, tiny cylindrical graphite flakes. Its scale, special structure and composition endow it with extremely unique properties, and are highly regarded by the scientific community. Widely concerned, it is of great significance both in basic scientific research an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 沈健民侯文华朱俊杰
Owner NANJING UNIV
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